To find proof as to whether he is "in love" or not, Yukimura pats Himuro on the head from point-blank range. Seeing this, Ibarada, an upperclassman in the Ikeda Lab, talks about the need for a control experiment. In other words, in order to prove that the racing of his heart is because of Himuro specifically and not just because he's facing a woman, Yukimura has to pat Kanade and Ibarada on the head too. Himuro, on the other hand, sets out to prove that food made with love tastes better and cooks, but...
Should we use it to compare 
the flavor of dishes A and B?
هل نستخدمه لمقارنة نكهات الطبقين أ و ب؟
Wir könnten die Aromen
von Speise A und B vergleichen.
Dovremmo usarla per mettere a confronto
i sapori dei piatti A e B?
Quer comprar o sabor
dos pratos A e B com isso?
Может, с его помощью 
сравнить вкус блюда А и Б?